Valve



Patented Feb. 21, 1928.

UNITED STATES PATENT oFFlcE.

FRANK A. HALLECK, OF CHICAGO, ILLINOIS7 ASSIGNOR T0 SULLIVAN MACHINERY COMPANY, AA CORPORATION OF `MASSACHUSETTS VALVE.

Application filed .Tune 28,

This invention rela-tes to valves for compressors and the like.

It has for an object to provide a combined s inlet and discharge valve structure adapted to be applied to and removed from thecompresser cylinder as a unit, and comprisinga single valve cage carrying both theinlet and discharge valves, the device being of conipact construction, eilicient inv operatiomand adapted to reduce the clearance or dead air space in the cylinder to a minimum.

The foregoing and other objects of the invention, together with means whereby the same may be carried into eii'ect, will bestbe understood Jfrom the following description ot' one form or embodiment thereof illus trated in the accompanying drawings, in which:

Fig. 1 is a longitudinal section of a. compressor cylinder having inlet Vand discharge chambers or passages and inlet and discharge valves constructed and arranged vin accordance with the invent-ion.

F 2 is an enlarged longitudinal section oiI one ot the combined inlet and discharge valve units andportions ci the engine cylinder adjacent thereto.

Figs. 3 and lare detail views of one of theA valves and its cooperating spring.

The compressor shown in Fig. 1, which is i ot' the double acting type, comprises a cylinder 10 provided with heads 11 and containing a. piston 12 provided with a, piston rod 13 which passes through a stutln'g box 11i in one of said'heads. Surrounding the cylinder 10 is a jacket 15 forming with the cylinder wall a space 16 for the'circulation o'l" cooling water, said jacket being formed at its opposite sides with intake and discharge chambers 17 and 18 communicating with intake and discharge conduits 19 and 20, respectively. Each of the cylinder heads 11 is formed with a space 21 for the circulation ot cooling water, with an intake cham-' ber 22 communicating with the intake chamber 17 of the cylinder jacket 15, and with a valve chamber 23 communicating at one end with the intake chamber 22, at the opposite end with the discharge chamber 18 .of the cylinder jacket, and at one side, through a lateral port 24, with a space 25 in the cylinder head constituting a continuation of the 1921. Serial No. 481,143.

cylinder 10. Each of theintake chambers 22 in the heads 11 is formed, adjacent the corresponding valve chamber'23, with a lat- 55 eral opening L t8 closed by a detachable cover plate 2G. Y Located in each of the valve chambers 23 is a valve cage comprising two parts 27 and 2,8 connected by a centrally disposed bolt or stud 29 and angularly positioned by dowels The stud 29 has threaded engagement with the cage part 28 and is formed with av flange or Vcollar30 .received in a coaxial recess in the cage part 27 and bearing against 65 the bot-tom oit said recess. A pin 30 passing through the stud 29 at the opposite side of the part 27 from the collar 30 holds the stud against all ybut rotary movement in the part 27. T ie part 27 is formed with a flange 32 70 seated on a shoulder 33, formed in the head 11 at the junction of the intake chamber 22 and vvalve chamber 23, and is secured thereto by bolts 34. The part 28 is seated upon a shoulder 35 formed inthe valve chamber 23 7l adjacent the lateralopening 24, and may be i forced into close engagement with said shoulder, after the part27 has been secured in place by the vbolts 34, by operation of the stud 29 which thus serves as means for ad- Bo justing the Vcage part 28, the dowels 31 holding the part 28 against rotation when said stud is turned. 1 It will be observed that the valve cage described, while composed of two connected4 parts, comprises in effect a single g5 structure which may be inserted or removed as a unit through the lateral opening 48 in the cylinder head. The valve cage parts 27 and 28 are foi'med with parallel annular valve seats 36 and 37, 90 respectively, the valve seat 36 surrounding an annular port 38 formed in the part 27 and providing'communication between the intake chamber 22 and valve chamber 23,Y and the valve seat surrounding an annular port 39 formed in the part 28 and providing coml munication between the valve chamber port 24 and the discharge chamber 18. Cooperating with tbevalve seats 36 and 37 are annular inlet and discharge valves 40 and 41 100 adapted respectively to control the flow of fluid between the intake chamber and the cylinder and between the c linderand the discharge chamber. In t e construction shown,the valves 40 and 41 are of the type disclosed and claimed in an application of Fred D. Holdsworth, Ser. No. 142,706, filed J an. 16, 1917 said valves being preferably composed vof sheet steel, being of flat annular form as shown in Fig. 3, and being held to their seats by valve springs 42 preferably formed of thin resilient sheet metal, said springs having bowed central portions and flattened ends as shown in Fig. 4. The valve cage part 28 is formed with a shoulder 43 constituting an abutment for the spring 42 controlling the valve 40, and with wing portions 44 engaging the part 27 and constituting guides for said valve and spring. Secured to the part 28 by a cap screw 45 is a combined guide and abutment member 46 for the vvalve 41 and spring 42 controlling the same. rlhe guide wings 44 serve as means for spacing the body of the part 28 from the part 27 in order to provide a .space for the How of fluid from the port 88 tothe port 24, and said part- 28 is formed with lateral passages 47 forming communication between said port 24 and the port 39. In the construction shown, the passages 47 are arranged in a radial series extending completely about the valve cage, being of progressively decreasing size from the side of said cage adjacent the port 24 to the diametrically opposite side.

From the foregoing description it will be seen that the invention provides a compact and convenient cylinder and inlet and discharge chamber arrangement, as well as an eliicient and extremely small and compact valve mechanism which permits the ready removal of the valves for purposes of repair orl replacement and in which the clearance space is reduced to a minimum.

' l/Vhile I have in this specification described and shown one embodiment which my invention may assume in practice, it will be understood that the particular construction and arrangement shown and described have been chosen for illustrative purposes merely, and that the invention may be otherwise embodied and practiced without departing l fromtits spirit or the scope of the claims hereunto appended.

lWhat I claim as new and desire to secure by Letters Patent is 1. In a compressor, the combination with a'I cylinder, of a combined inlet and discharge valve structure attachable to and detachable from said cylinder as a unit and including means for maintaining Vthe parts thereof relatively immovable when detached from the cylinder but permitting` relative separable adjustment thereof and maintaining the same in fixed adjusted position.

2. In a compressor, the combination with a cylinder, of a valve cage structure providing a plurality of valve seats attachable to and detachable from said cylinder as a unit and including means for maintaining the parts thereof relatively immovable when detached from the cylinder and adjustable to alter the relative spacing of said parts, and inlet and discharge valves cooperating with said seats respectively.

3. In a compressor, a single valve` cage provided with a plurality of parallel simi- 'larly facing annular valve seats, said valve cage being` attachable to and detachable from the compressor as a unit and includingmeans for maintaining the parts thereof in a predetermined relative position when said cage is detached from the compressor and adjustable to alter the relative position of said parts, and flat vannular inlet and discharge,

5.v In a compressor, the combination with a cylinder structure including a head, of a valve cage having a flange bolted to said cylinder struct-ure, said cage comprising means affording a plurality of valve seats `maintained rigidly in a predetermined relation to each other when said cage is removed from a cylinder, and inlet and discharge valves 4cooperating with said seats respectively. i

` 6. In a compressor, a unitary valve cage provided with a plurality of valve seats bearing a fixed predetermined relation to each other and facing in the saine direction and with lateral spaces or passages between said seats, and inlet Yand discharge valves cooperating with said lseats respectively.

7. In a compressor, the combination with a cylinder, of a unitary valve cage disposed at the side of said cylinder and provided with a plurality of valve seats and with lateral passages between said seats, said passages being disposed in a series extending around said cage and being of sizes which decrease progressively from the side of said cage adjacent said cylinder, and inlet and discharge valves cooperating with said seats respectively. v v

8. In a compressor, the combination with a cylinder, of a valve cage attachable to and detachable from the cylinder as a unit, said valve cage comprising two partsv each provided with a valve seat facing in the same direct-ion, an inlet valve cooperating with the seat of one of said parts, a discharge valve cooperating with the seat `of the other of said parts, and means for main- .same direction, an kinlet valve cooperating with the seat of one of saidparts, a discharge valve cooperating with the seatofv the other of said parts, means for maintaining said parts in solidly connected fixed predetermined relation, adjustable to vary such relation, and means for attaching said 'y valve cage to the cylinder, thev attaching means being adapted to be operated wholl)7 romthe Yside of the'y cylinderon which the insertion is made.

l0. In a compressor, a'valve cage comprising two connected parts each providedwith a valve seat, a centrally disposed bolt or stud for adjustably'securing said parts together in different rigid relations, van inlet valve cooperating vwith the seatof one of said parts, and a discharge valve cooperating with the seat ofthe other of said parts. l1. In a compressor, the combination with a cylinder structure. including a head and having a valve chamber and two shoulders adjacent said valve chamber, of a valve cage comprising two parts, one of said parts being secured to one ot said shoulders, means connected to said last named part 4for forcing the other of said parts into engagement with the other of said shoulders andA constituting` means for holding said .parts in iiXed space relation :on removal :from said cylinder, an inlet valve cooperating with the valve Vscat or" one of saidrparts, and a discharge valve cooperating with the seat of the other of said parts.v

l2. In a compressor, thecombination with a cylinder, of a valve cage attachable'to and detachable from the Ycylinder as a unit, said valve cage comprising two'connected parts provided respectively with parallel annular valve seats, a .centrally disposedfbolt for securing said parts together in 'dil'erent redetermined fixed space relations, vsaid olt being adapted to adjust the amount of said spacing, a llat annular inlet'valve cooperating with the seat of one of' said parts, and ay flat annular discharge valvecooperating with the seat of the other o ffsaid parts.

13. In a compressor, the combination with a cylinder structure including a cylinder head and having a valve chamber and shoulders adjacent said valve chamber, of'a valve cage comprising two connected parts each provided with a valve seat, one of said parts having a flange bolted to one offsaid shoulders, a stud connecting said parts and adapted 'totorce the `other of said parts into en'- gagenien with the other of said shoulders,

tric with said an inletvalve 'cooperating' with the seat of said first named part, 4and a discharge valve cooperating with the seat of the other 0f said parts.

14.- In a compressor, a valve cage com prising two connected parts, each provided with a valve seat,an inlet valve cooperating withv the seat of one Aof said parts, a discharge valve cooperating with theseat of the other of said parts, one of said parts constituting a guide for the valve seated on the other of said parts and being provided with flow passages for the fluid passinv said valve, and means concentric with said parts orholding them assembled.

-1'5."In a compressor, a valve cage comprising two connected parts, each provided with a valveseat, means disposed coaxially of said seats forfeliecting adjustments therebetween to different fixed relations, and inletv and discharge valves cooperating with said seats respectively, one of said parts constituting a guide forthe valve seated onv the other of said parts.

16. In a compressor, a valve cage comprising two connected parts each provided with a valve seat, an inlet valve cooperating with the seat yof one of said parts, adischarge 1 valve cooperating with the seat of the other of said parts, said last-named part constituting a guide for said inlet valve, a separate guide for said discharge valve secured tosaid last` named part, andv means concenparts `for holding them assembled.

17. In a compressor, a valve cage comprising two connected parts each provided with a valve seat, an inlet valve cooperatingwith the seat of one of' said parts, a discharge valve cooperating with the seat of the other y of said parts, said last named part constituting a guide for said inlet valve and being providedv With low passages for the fluid passing said valve, a lseparate guidefor said discharge lvalve secured to said last named part, and means concentricr with said parts for holding them assembled.

18. In a compressor, a valve cage comprising two connectedl parts each provided with an annular valve seat, a flat-annular inlet valve cooperating with the seat of one of'said parts,a fiat annular discharge valve cooperating with thel seat of the other oi" said parts, transversely bowed ,annular springs for controlling said valves, said last namedpar-t constituting a guide for said inlet valve and an abutment for the inlet valve spring, and a separate-guide and abutment for said :discharge valve and spring secured to'said llast named part.

19. In a compressor, the combination with a cylinder structure including a cylinder head, ysaid structure having inlet/,and discliargefchambers and a valvechamber between said inlet and. discharge chambers communicating with the'interior of said cylinder, of a unitary valve cage structure comprising a plurality of relatively adjustable parts and means tor maintaining them constantly, whether in said chamber or removed, in iixed space relation, disposed in said valve chamber, and valves carried by said cage one controlling fluid flow between said valve chamber and said inlet chamber and another controlling fluid flow between said valve. chamber `and said discharge chamber.

20. In a compressor, the combination with a cylinder structure including a cylinder head, said structure having inlet and discharge` chambers and a valve chamber between said inlet and dischargechambers and communicatingv with the interior ci' the cylinder, of a unitary valve cage structure comprising a-plurality of relatively adjustable part-s and means for maintaining'them constantly in ixed space relation, disposed in ysaid valve chamber, one of said chambers having an opening through which said valve cage may be inserted (ir-removed, a reinovable cover kfor said opening, and valves carried by said cage for controlling fluid low p betweensaid valve chamber and said inlet and discharge chambers, respectively.

2l. In a compressor, the combination with a cylinder structure including a cylinderr head, said structure having inlet and discharge chambers and a valve chamber between said inlet and discharge chambers and communicating with the interior of the cylinder, of a unitary valve cage structure comprisinga plurality of relatively adjustable parts and means for maintaining them constantly in fixed space relation, disposed in said valve chamber, said inlet chamber havingl an opening through which'said valve cage may be inserted and removed, a removable cover for said opening, and valves carried by said cage for controlling fluid flow between said valve ychamber and said inlet and exhaust chambers, respectively.

22. In a compressor, the combination with a cylinder structure comprising a heady and having inlet and. discharge chambers and a valve chamber between said inlet and discharge chambers, said valve chamber being located at one side of the cylinder and communicating with the interior thereof, of a unitary valve cage structure comprising a plurality ot relatively adjustable parts and means for maintaining them constantly in ixed. space relation, disposed in said valve chamber, and valves carried by said ca ge for controllingluid flow-between said valve chamber and said inlet and exhaust chambers, respectively. 23. VIn a compressor, the combination with a cylinderstructure including a c-ylinder head, said structure having inlet and discharge chambers and a valve chamber betweenA said inlet andv discharge lchambers and communicating with the interior of the cylinder, of a unitary valve cage structure comprising a plurality of relatively adjustable parts and means for maintainingthem constantly in fixed space relation, disposed insaid valve chamber and provided with a pluralityl of valve seats and with lateral passages vbetween said seats, and valves cooperating with said seats for controlling fluidk flow between said valve chamber and said .inlet and'zexhaust chambers, respectively.

24. In a compressor, the combination with a cylinder having a headprovided with a lvalve chamber, of a unitary valve cage structure comprising relatively adjustable valve seat parts adapted to 'bear a 'xed relative relation to each other when removed from said compressor and adapted for insertion in said valve chamber and provided with inlet 'and discharge valves..

25. In a compressor, the combination with charge chambers, respectively.

26. In a compressor, a valve chamber having spaced shoulders affording spaced parallel supporting abutments, and a valve cage removably mounted in said valve chamber, said valve cage comprising a plurality of parts which are insertable as a unit, and being adjustable in length to cause the same toengage both lof said shoulders simultaneously, said cage comprising means whereby the component parts Vot said cage are maintained, in fixed space relation when said cage is removed fromthe valve chamber.

27. In a compressor, the combination with a cylinder, of a unitary valve mechanism disposed at the side of the cylinder and'provided with a plurality ot plane valve seats movement in either direction Vin one of said members, and means carried by the other member cooperating With the threaded portion of saidelement. y

29. In a valve mechanism, relatively movable seat members, means for connecting the same comprising an element mounted for rotation and held against longitudinal movement in either direction in one of said members, and means permitting by rotation of-10 said element operative connection between said members to effect a Xed axial-relation therebetween. In testimony whereof I affix my signature.

FRANK A. CK. 

